LaTeX forum ⇒ Math & Science ⇒ Alternative to fleqn for mhchem and chemmacros

[cgnieder]

To be honest, i don't even see the problem.

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\documentclass[fleqn]{article}
\usepackage{chemmacros}
\usepackage{showframe}
\setlength{\mathindent}{.2cm}
\begin{document}
\reaction{H2 + O* <=> OH* + H*}
\end{document}

I'm surprised this works! chemmacros doesn't provide a \reaction macro but only a {reaction} environment. Actually it doesn't work – try this:

Code: [Select all] [Expand/Collapse] [Download] (untitled.tex) Open in Overleaf

\documentclass[fleqn]{article}
\usepackage{chemmacros}
\usepackage{showframe}
\setlength{\mathindent}{.2cm}
\begin{document}
\reaction{H2 + O* <=> OH* + H*}
 
foo bar
\end{document}

This does work:

Code: [Select all] [Expand/Collapse] [Download] (untitled.tex) Open in Overleaf

\documentclass[fleqn]{article}
\usepackage{chemmacros}
\usepackage{showframe}
\setlength{\mathindent}{.2cm}
\begin{document}
\begin{reaction}
   H2 + O* <=> OH* + H*
\end{reaction}
foo bar
\end{document}

Regards